Keith Urban Still Undergoing Treatment

12/04/2006 at 05:25 PM EST

Keith Urban reunited with wife Nicole Kidman Sunday in Los Angeles, but his rep tells PEOPLE that the singer is still undergoing treatment for alcohol abuse.

"At this stage in (Keith's) treatment patients are occasionally allowed to leave for short periods of time," his rep says. "Keith is not out of rehab and is not back home in Nashville."

Urban, 39, checked into rehab on Oct. 19, saying in a statement at the time: "One can never let one's guard down on recovery and I'm afraid that I have."

"I deeply regret the hurt this has caused Nicole and the ones that love and support me," he added.

Kidman, 39, visited her husband at the facility where he was being treated before returning to the London set of The Golden Compass last month.